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Finding the Fourth Proportional to 501,928.44, 692,775.55 and 287,186.91

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Solution

The fourth proportional to 501,928.44, 692,775.55 and 287,186.91 is: 396,383.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,928.44 : 692,775.55 = 287,186.91 : x
  2. Step 2: Convert to fraction form
    501,928.44/692,775.55 = 287,186.91/x
  3. Step 3: Cross multiply
    501,928.44x = 692,775.55 × 287,186.91
  4. Step 4: Simplify right side
    501,928.44x = 198,956,069,528.05
  5. Step 5: Solve for x
    x = 198,956,069,528.05/501,928.44
  6. Step 6: Final answer
    x = 396,383.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.